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Wednesday , 14th April 2021
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Vellore District Profile

  • Vellore district is bounded by Kancheepuram District in the east, Tiruvannamalai and Dharmapuri districts in the south and State of Andhra Pradesh in the North.
  • The District lies between 12º15’23’’to 13º12'32’’ N Latitude, 78º24’16’’ to 79º54’56’’E Longitude and has an areal extent of 6077 sq.km.
  • There are 20 Blocks, 743 Villages and 6012 Habitations in the District.

Physiography and Drainage

  • Vellore district can be broadly classified as hilly terrains and plain regions.
  • The east of Eastern Ghats where lies the Palar plain region.
  • The region is mostly undulating and sloping towards east.
  • The river Palar in its course is successively enriched by the tributaries Malattar, Koundinyanadhi, Poiney and Cheyyar.
  • Palar is not a perennial river and occurrence of flood is very rare and of very short duration
  • R. Cheyyar is the major tributaries of R.Palar, originates from Javadhu hills.
  • However river Palar has good thickness of Alluvium all through

Rainfall:

The average annual rainfall and the 5 years rainfall collected from IMD, Chennai is as follows:

Acutal Rainfall in mm Normal Rainfall in mm
2013 2014 2015 2016 2017 2018
792.60 685.70 1359.80 680.9 1042.4 601.2 936.2

Geology:

Rock Type Geological Formation
Sedimentary Rock 90%,Hard Rock 10% Charnockite, Gneiss, Granite,Syenits, Pyroxineite, Sandstone and Shale and Alluvium

Hydrogeology:

Type of Aquifer Discontinuous unconfined to semi confined aquifers in the fissured
formations.
Aquifer parameters Hard rock Alluvium
Well yield in lpm >40 - 200 200 - 400
Transmissivity (T)m2/day 8 - 80 200 - 300
Permeability (K)(m/day)) 0.5 - 2.5 20 - 30
Depth of Water level 3 m to 13m  

Sustainability:

With a view to enhancing the Sustainability of the drinking water sources, recharge structures are being implemented by TWAD Board under various State and Central Government assistances.

The Recharge Structures implemented so far is as under.

Groundwater Potential as on March 2011 (as per CGWB):

Net Groundwater Availability (in MCM) 592.80
Existing Gross Groundwater draft for all users (in MCM) 621.44
Stage of Groundwater development (in %) 105%
Categorization of District Over Exploited

Categorization of Firkas:

The status of Categorization of Firkas as of March 2013 for the District is shown below.

Categorisation based on Extraction (as on March 2013) No. of Firkas Firkas
Over Exploited (>100%) 26 Ambalur, Ambur, Ammanankoil, Anaicut,
Arcot, Gudiyatham (West),
Gudiyatham(East), Pennathur, Jolarpet,
K.V.Kuppam, Kalavai, Katpadi, Thenvellore
Madhanur,Nemili, Pallikonda,
Pudupadi, Sathuvachari, Thuthipattu,
Timiri, Tirupathur, Ussoor,
Vaduganthangal, Valathur, Vaniyambadi,
VadaVellore
Critical (90%-100%) 8 Kaveripakkam, odugathur, Kandhili, Agaram, Alangayam, Kaniyambadi, Melpatti, MelasannanKuppam
Semi Critical (70%-90%) 17 Andiyappanur, Arakonam(South), Banavaram
, Koratti, Melpadi,
Natrampalli, Pallur,
Panapakkam, Paranji, Pernampattu,
Ranipet, Sholinghur, Thiruvalam, Velam,
Visharam, Mambakkam, Walajah
Safe (<70%) 2 Arakonam(North), Pudurnadu..
Others (Poor& Saline)    
Total 53  
Water supply status as on 1.4.2018

Rural Habitations

Total No. of Rural Habitations: 6012

Partially covered 0 (10-39 lpcd )
Fully covered 6012 (40 lpcd and above)

Urban Towns ( Water supply status - 1.8.2019)

S.No Name of Towns Population Present water supply level LPCD
Corporation
1 Vellore 185803 115
Municipalities
1 Walajapettai 47498 87
2 Ranipet 50764 89
3 Tirupathur 64125 91
4 Arakonam 78395 95
5 Arcot 55955 97
6 Gudiyatham 91558 90
7 Ambur 114608 93
8 Vaniyampadi 95061 87
9 Melvisharam 44786 92
10 Pernampattu 51271 88
11 Jolarpet 29662 91
Town Panchayats
1 Alangayam 18327 75
2 Ammoor 12513 70
3 Kalavai 9773 60
4 Kaveripakkam 14583 72
5 Natrampalli 10390 71
6 Nemili 10806 72
7 Odugathur 8998 71
8 Pallikonda 23067 72
9 Panapakkam 11536 70
10 Pennathur 9425 70
11 Sholingur 30856 70
12 Thakkolam 13983 70
13 Thiruvalam 9153 70
14 Timiri 16246 70
15 Uthayendram 13837 70
16 Vilapakkam 8174 70

Ground Water Level:

The Ground Water levels from the 53 number of observation wells of TWAD have been analysed for Post-Monsoon and Pre-Monsoon. 5 years average Ground water level in m Below Ground Level for pre and post monsoon is as follows:

Jan
2013

May
2013

Jan
2014

May
2014

Jan
2015

May
2015

Jan
2016

May
2016

Jan
2017

May
2017

Jan
2018
May
2018
Jan
2019
May
2019

5 Years
Pre Monsoon
Average

5Years
Post Monsoon
Average

5.50

9.36

13.20

16.90

17.88

17.88

4.54

8.82

12.5

19.6

8.1 17.0 12.6 21.3

10.6

15.8